5. New York City
kayak screenshot
Who launched here?: Foursquare, Tumblr, Bit.ly, Kayak
Average entrepreneur age: 32.6
Average work hours per day: 9.7

As the top startup breeding ground on the East Coast, New York has launched a number of impressive and nationally recognized enterprises in recent years. Entrepreneurs interested in tackling the world of ecommerce may find New York more fruitful than Silicon Valley, and many female tech entrepreneurs have also settled in NYC; women account for one-fifth of startup entrepreneurs in the area.

  @FortuneMagazine - Last updated November 27 2012 10:17 AM ET
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